fix(regulatory): 修复无标签文档适用条件回显

tests/test_regulatory_llm_review.py

@@ -40,3 +40,18 @@ def test_review_condition_fields_falls_back_when_llm_returns_chapter_title():
 
     assert result["selected_fields"]["产品名称"] == "甲胎蛋白检测试剂盒"
     assert result["selected_sources"]["产品名称"] == "rule"
+
+
+def test_review_condition_fields_rejects_garbled_llm_product_name():
+    def completion(messages, temperature=0.0):
+        return json.dumps({"fields": {"产品名称": "呼吸道合胞病毒、 <20>肺炎支原体核酸检测试剂盒 (荧光PCR法)"}}, ensure_ascii=False)
+
+    result = review_condition_fields(
+        text="呼吸道合胞病毒、肺炎支原体核酸检测试剂盒（荧光PCR法）",
+        rule_fields={"产品名称": "呼吸道合胞病毒、肺炎支原体核酸检测试剂盒（荧光PCR法）"},
+        file_context="产品列表.txt",
+        completion_func=completion,
+    )
+
+    assert result["selected_fields"]["产品名称"] == "呼吸道合胞病毒、肺炎支原体核酸检测试剂盒（荧光PCR法）"
+    assert result["selected_sources"]["产品名称"] == "rule"